43 lines · plain
1* Hisilicon 6210 i2s controller2 3Required properties:4 5- compatible: should be one of the following:6 - "hisilicon,hi6210-i2s"7- reg: physical base address of the i2s controller unit and length of8 memory mapped region.9- interrupts: should contain the i2s interrupt.10- clocks: a list of phandle + clock-specifier pairs, one for each entry11 in clock-names.12- clock-names: should contain following:13 - "dacodec"14 - "i2s-base"15- dmas: DMA specifiers for tx dma. See the DMA client binding,16 Documentation/devicetree/bindings/dma/dma.txt17- dma-names: should be "tx" and "rx"18- hisilicon,sysctrl-syscon: phandle to sysctrl syscon19- #sound-dai-cells: Should be set to 1 (for multi-dai)20 - The dai cell indexes reference the following interfaces:21 0: S2 interface22 (Currently that is the only one available, but more may be23 supported in the future)24 25Example for the hi6210 i2s controller:26 27i2s0: i2s@f7118000{28 compatible = "hisilicon,hi6210-i2s";29 reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit */30 interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; /* 155 "DigACodec_intr"-32 */31 clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,32 <&sys_ctrl HI6220_BBPPLL0_DIV>;33 clock-names = "dacodec", "i2s-base";34 dmas = <&dma0 15 &dma0 14>;35 dma-names = "rx", "tx";36 hisilicon,sysctrl-syscon = <&sys_ctrl>;37 #sound-dai-cells = <1>;38};39 40Then when referencing the i2s controller:41 sound-dai = <&i2s0 0>; /* index 0 => S2 interface */42 43